| Acronym | Definition |
|---|
| RGA | Return Goods Authorization |
| RGA | Republican Governors Association |
| RGA | Reinsurance Group of America |
| RGA | Relative Gain Array |
| RGA | Randomly Generated Acronym |
| RGA | Residual Gas Analyzer |
| RGA | Royal Garrison Artillery |
| RGA | Remote Gambling Association (EU) |
| RGA | Refinery Gas Analyzer |
| RGA | Rules of General Application (Los Angeles Department of Building and Safety; Los Angeles, CA) |
| RGA | Restricted Growth Association (UK) |
| RGA | Revue de Géographie Alpine (French: Journal of Alpine Geography) |
| RGA | Rate Gyro Assembly |
| RGA | Rio Grande, Tierra Del Fuego, Argentina (Airport Code) |
| RGA | Ricegrowers' Association of Australia Inc. |
| RGA | Reliability Growth Analysis |
| RGA | Rainbow Gender Association (Ben Lomond, CA) |
| RGA | Règlement Général d'Assainissement (French: General Sanitation Regulations; Belgium and France) |
| RGA | Reflection Grating Assembly |
| RGA | Radio Golfe d'Amour (French radio station; est. 1981) |
| RGA | Reading Guild of Artists (UK) |
| RGA | Rubber Growers' Association (Malaysia) |
| RGA | Rapid Generation Advance |
| RGA | Registered Gemologist Appraiser |
| RGA | Reduced Gradient Algorithm |
| RGA | Russian State Archive for Social/Political History |
| RGA | Royal Global Army (gaming clan) |
| RGA | Residential Gateway Architecture |
| RGA | Révision, Gestion, Audit (French: Review, Management, Audit) |